Étude de La Synthèse de Tétrachalcogenofulvalenes Dissymétriquement Substitués Par Réaction de Type Wittig‐Horner

Abstract

Abstract The synthesis of functionalized unsymmetrically substituted tetrathiafulvalenes 1, 2 and 3, 4 (see scheme in the introduction) was described. Two routes were used. A cross‐coupling preparation from appropriate 1,3‐dithiolium salts which offered poor yields and a WITTIG‐HORNER type reaction which was studied in details. A solvent modification in the later reaction, allowed us to improve the yield of 1 and 2 obtained selectively.